governor romney, he's a good debater. i'm just okay. >> nbc's chris tin welker is live and joins us from las vegas not far from henderson, nevada, where the president is preparing for wednesday night. good afternoon, kristin. the last time i heard such a chorus of lowering expectations was when pinklynn thomas got into the ring with tyson only for tyson to land a flurry of 16 punches. is this more about avoiding embarrassment as opposed to landing a killer blow? >> reporter: well, i think it is, martin. i think you're absolutely right. one more point about mike tyson though, it was right here in las vegas that he did some serious damage to evander holyfield's ear. so i think we're hoping wednesday night's debate doesn't get that ugly. but i think you're right. i think both candidates are really hoping to just walk away from wednesday night unscathed, and that will look like a victory for each of them. on mitt romney's part, his advisers say he has to get more specific about his economic policy. that's what voters want to